Rotary punching device



May 23, 1933. J. D. KREIS ROTARY PUNCHING DEVIC Filed Aug. 4, 1951Kililll NVENTR Jascfh D Kf'ei ATTORNEY@ BY @MMMHMVM Patented May 23,1933 I UNITEDI STATES PATENT OFFICE.

JOSEPH D. KREIS, F CLEVELAND, OHIO, ASSIGNOR TO BONNAR-VAWTER FANFORM'.COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION 0F DELAWARE ROTARYPUNCHING- DEVICE Application led August 4, 1931. Serial No. 554,995.

forms printed in continuous lengths, such as fanfolded forms for expensebills and the like. Printed forms of the type described are commonlysupplied to the user with holes punched through them so that, after aform has been written up in connection with the transaction, such partsof the form as are to be preserved can be bound between covers forfiling. It is the object of this invention to provide a machine by whichsuch holes can be punched in a long web of paper with the desiredaccuracy, cleanness, and rapidity.

In the machine of the invention, the paper web to be punched is ledabout the surface of a drum or rotor which is rotated by suitable meansso as to advance the web at the proper rate of speed. The rotor carriesa plurality of punching units which operate during the rotation of thedrum and these units are ordinarily arranged in pairs, with one unit ateach end of the rotor and the pairs spaced angularly about the rotor adistance corresponding to the desired spacing between the holes to bepunched in the web. During the rotation of the rotor, the punchingdevices move toward each other and across the web so as to overlie thepaper to the desired extent. As soon as the devices have reached thisposition, punch tools forming a part thereof are operated to punch thepaper andthen freed therefrom and the devices are then retracted to theends of the drum so that the paper may be freely removed therefromwithout being torn.

With this arrangement it will be seen that the web can be led to thedrum without interference and without danger of being torn by thepunching devices, the latter having no movement relative to the paper ina lengthwise direction but only moving across the paper to bring thepunching tools to proper punching position. When the punching operationsare completed, the devices are immediately retracted and there is thusno danger that the paper will be injured by contact with the devices asit is withdrawn from the drum. The machine is capable of adJustment sothat it will punch holes in paper webs of different widths and thespacing of the holes both lengthwise and across the web, as well as thesize of the holes, may be varied as desired.

For a better understanding of the invention, reference may be had to theaccompanyin drawing, in which ig. l is a view in side elevation withparts broken away of the new machine;

Fig. V2 is a sectional view on the line 2-2 of Fig. 1; and

'Fig 3 is an enlarged sectional view of the punching tools and relatedparts showing the use of spacers between the abutment and the camhousing.

Referring to the drawing the preferred form of the machine isillustrated as including end frame members 10 and 11 in which 70 aresupported end plates 12 and 13, respectively. These end plates aresupported by means of extending collars which are clamped in the framemembers and have bosses 14 and 15 provided with ball bearings 16 forshafts 17 and 18. At their inner ends, the shafts support a rotorgenerally designated 19. The shaft 18 is hollow and it communicates withthe interior of the rotor. Mounted on the shaft 18 is a drive element 2Owhich .may be either a gear, pulley, or the like and the shaft isconnected to the intake of a blower or other suction means, so that thepieces of paper punched from the web and collecting in the interior ofthe rotor may be continuously removed.

rl`he rotor is provided with a central section 21 of less diameter thanthe ends 22 and the paper web 23 entering the machine passes beneath aguide roller 24 mounted in the frame members 10 and 11 near their lowerends and then passes upwardly and over the top of the rotor between theenlarged ends thereof. The holes are usually punched in the web at thehighest point of its travel and the web moves along with the rotor andis led away beneath another guide roll 25 mounted in the end framemembers.

The punching tools employed include radially disposed plates 26 movablein longitu- 100 dinal slots formed in the enlar ed ends" there are threepairs of punches disposed around the rotor at an angular spacing of 120.Each end plate 12, 13 is provided with its cam housing and cam cylinderand the cam tracks in the cam cylinders are so conh structed that thetools are advanced over the\ paper as the paper moves toward the top ofthe rotor and retracted as the paper moves down from the top on theother side.

Each of the plates 26 has a slot 39 aligned with the surface of thesmaller section of the rotor and extending from the inside edge of theplate so that when the plate is moved toward the center of the web ofpaper, the slot will receive the paper. vNear the leading edge of theslot in the upper arm formed ment 36 mounted at the inner end of eachcam is the corresponding female die 40.

The male die 32 is operated by an abutment 36 mounted at the inner endof each cam housing and held in place by a bolt 37 and spaced from theinner end of the cam housing by spacers 38. This abutment member liesdirectly over the punch 32 when the tool plate 26 is moved to itsinnermost position and as the punch passes beneath the Labutment, thelatter forces the punch down so that it passes through the paper. Thecam cylinders 29 may be changed to change the distance between the edgeof the paper and the holes to be punched and in order to make theabutment 36 overlie the male die it is spaced from the cam housing byspacers or shims 38.

The die is positively withdrawn from the paper by a lever 33 pivoted at34 in a slot in the top of the plate 26. The lever has an upwardly`projecting end 35 extending out of the slot. A cam face on the cam 29operates this lever at the appropriate time.

In the approachlng movement of the tools to bring the punches intoproper relation to the webs, the inner ends of the tools move out of theslots in the enlarged ends of the rotor and each tool plate advancesover the paper web to bring its punch into proper position. Directlybelow the lower end of the female die there is an opening 41 formed inthe rotor so that the pieces of paper punched from the web may pass intothe interior of the rotor and be withdrawn by suction.

In the operation of the machine, the web passing around the guide rollercomes into contact with the surface of the rotor at about the point 42.At this point in the travel of the rotor, the tools 43 which lie belowthe point 42 are fully retracted into their slots.

As the rot-or advances, the tools are forced toward each otherbyengagement of their rollers in the cam tracks but thek tools do notpass out beyond the ends of their slots inthe enlargedheads ofthe rotoruntil the tools have passed beyond the point 42 wherethe web is incontact with the surface of the rotor. The tools are advanced to theproper position relative to the web by the cams'and the shape of the camtrack determines the spacing ofthe holes inward from the edges of thepaper. Accordingly Vdifferent cams are used in the machine, depending onthe transverse spacing of the holes. When the tools 43 reach the topmostpoint in the travel of the rotor, they have also reached the end oftheir inward travel andl the male dies are forced down by the action ofthe abutments 36. The cam cylinder is provided with a cam recess 44 toreceive'the projecting end 35 of lever 33 which has been rocked by thedownward movement of the punch 32, but as soon as the punch passes fromlbeneath the abutment 36, the cam slot 44ji`s shaped to force theprojecting end 35 of lever 33 downwardly, rocking the lever so as tomove the punch upward and out of the hole which e has been punched inthe paper. The punch is maintained at its high point until the rotormakes another complete rotation. As soon as the tools have completedtheir punching operation, they are withdrawn into their slots, so thatby the time they have advanced to the point 45, they are fully retractedand free of the edges of the paper. In the further e rotation of therotor, the paper with the holes 46 punched therein is free to leave thesurface ofthe rotor and passes down and .around the guide roller 25 andleaves the machine.

In the machine illustrated, there are three pairs of tools and thedistance lengthwise of the paper between pairs of holes depends on thesize of the rotor. The rotor may be pro.-

vided with any number of slots desired and the tools will be placed inthe slots in accordance with the spacing that the holes are to havelengthwise of the web. By proper selection of cam cylinders, the spacingo the holes transversely of the web may be adjusted as desired. Whennecessary additional spacers 38 will be inserted between the ends of thecam housing and the cam plates 36 in order to place the cam plates 36 inthe desired position to operate the punches.

It will be seen that in the new machine, the punching devices are keptclear of that part of the rotor about which the paper is led until afterthe paper is in contact with the rotor. Thereafter, the punching deviceswhich are moving angular-ly at the same rate of speed as the paper aremoved across the paper to bring the punches. in proper position, thepunches are then operated and retracted and the devices move backandaway from the paper. The movement of the devices into and out ofoperative position takes place at a high rate of speed but underpositive control so that although the paper passes rapidly through themachme, there is no danger of the paper being torn by contact with thepunches as the paper approaches or leaves therotor. Also, at the timethe punching tools pass through the paper, the tools and paper aretraveling angularly at the same rate of speed so that there is no dangerof the tools being distorted and the tools make a sharp clean-cut, withthe punched out portions of the paper passing into the rotor and beingcontinuously drawn olf.

l claim:

1. A rotary .punching device which comprises the combination of a rotor,means for moving a web of paper into Contact with the surface of therotor to be advanced therewith, punching devices mounted in the surfaceof the rotor for movement longitudinally thereof, means for advancingthe punching devices into position relative to the edges of the paper,means for operating the punching devices while inthe latter position,and means for retracting the v punching devices by a movementlongitudinally of the rotor.

2. A rotary punching device which comprises the combination of a rotor,means for directing a web of paper into contact with the surface thereofto be advanced with the rotor and at the same speed, a punch deviceincluding male and female members Imounted on said rotor and movable ina direction parallel to the axis thereof, and means for actuating saidpunching means to punch the paper while the paper is being advanced incontact with the rotor.

3. A rotary punching device which comprises a rotor, means for rotatingsaid rotor, means for directing a web of paper in contact with thesurfaces of said rotor, punch means on said rotor and movable from aposition beyond the edge of the paper in contact with the rotor to aposition in which said means overlies the paper, means for advancing andretracting said punch means with respect to the paper, and means foroperating the punch means to punch the paper while said means overliesthe paper.

4. A rotary punching device which comprises a rotor, means for rotatingsaid rotor, means for directing a Web of paper into contact with thesurface of said rotor to be advanced therewith, punch means mounted onsaid rotor and movable laterally over the edges of said paper, a cammechanism for moving said punch means laterally With-` respect to saidpaper.

' 5. A rotary punching device which comprises a rotor, means forrotating said rotor, means for directing a web of paper into contactwith the surface of said rotor to be advanced therewith, punch means onsaid rotor normally lying outwardly beyond the edge of said paper, meansfor moving .said punch means inwardly over the edge of said paper andretracting said unch means to a osition beyond the edge o said paper, anmeans for actuating 'said punch means to punch the paper, said actuatingmeans including an abutment with which said punch means contact duringits travel.

6. A rotary punchin Adevice which comprises a rotor, means or rotatingsaid r0- tor, means for directing a web of paper into contact with thesurface of said rotor to be advanced therewith, punch means on saidrotor normally lying outwardl beyond the edge of the paper, means for avancing said punch means inwardly over the edge of said paper andwithdrawing it to a position beyond the edge of said paper, and meansfor actuating sald punch means to punch the p aper and to move clear ofthe latter, said actuating means including an abutment for effecting onemovement of the punch means, and cam mechanism for effecting the other.

7 A rotary punching device which cornprises a rotor, means for rotatingsaid rotor, means for directing a web of paper into contact with thesurface of said rotor, to be advanced therewith, punch means mounted onsaid rotor and longitudinally movable relative to said roller, and cammeans for moving said punch means lengthwise of said roller alternatelyin opposite directions.

8. A rotary punching device which comprises a rotor, means for rotatingsaid rotor, means for directing a web of paper into contact with thesurface of said rotor, to be advanced therewith, punch means mounted onsaid rotor and longitudinally movable relative to said rotor, said punchmeans including relatively movable punching elements, cam mechanism formoving said punch means alternately in opposite directions lengthwise ofsaid rotor for effecting relative movement of said punch elements tocause said elements to punch the paper and to be retracted therefrom.

9. A rotary punchin device, which comprises a rotor, means or guidin aweb of paper into contact with the sur ace of the rotor to be advancedtherewith, a punching device mounted on the rotor and movable in thedirection of the axis of the rotor from a position beyond the edge ofthe paper to a position in which portions of said punching deviceoverlie the paper, punching elements carried in said portions, means formoving said punching means from one position to another, and' means foractuating the punching elements while said punching elements overlie thepaper.

10. A rotary punching device, which comprises a rotor, means fordirecting a web of paper into contact with the rotor to be advancedtherewith, a punching device mounted in the rotor and movable in adirection in the paper and to move away from the a er.

p f1. In a rotary punching device, the combination of a rotor havingslots in the surface thereof extending in the direction of the rotoraxis, a punching device in one of said slots movable lengthwise of saidslot, means for positively moving the punching devices in said slot, andmeans operable when the punching device is at one end of its travel forY causing the punching device to operate.

12. In a rotary punching device, a 'rotor having a paper-receivingportion and a circumferential portion at one side of saidpaper-receiving portion of greater diameter than the latter, a slotformed in the surface of the rotor and extending in a direction parallelto the axis of the rotor, a punching device mounted in said slot, saiddevice including cooperating punching elements, and means for movingsaid device lengthwise 0f said slot and means for causing said co- ,n

operating elements to perform their punching function.

13. In a rotary punching device, a rotor having a paper-receivingportion and a circumferential portion at one side of saidpaper-receiving portion of greater diameter than the latter, a slotlformed in the surface of the rotor and extending in a direction parallelto the axis of the rotor, a unching device mounted in said slot, saiddevice including cooperating punching elements, said device beingmovable in its slot to position to cause them to punch said paper and beretracted therefrom.

15. lA rotary punching device, which comprises a rotary drum having asurface for receiving a piece of paper to be punched, a punching devicemounted on said drum and movable lengthwise of the latter, said punchingdevice carrying spaced cooperating punching elements, cam means formoving said punching device toward and away from said paper-receivingsurface to positionthe elements thereon on opposite sides of a piece ofpaper on said surface, said cam means including a caml housing intowhich the end of the drum projects, and means carried by said housingfor actuating said cooperating elements toV punch a iece of paperbetween them and to retract said elements -from the paper.

In testimony whereof I aix my signature.

JOSEPH D. KREIS. v

said cooperating elements onppposite sides of a piece of paper on saidpaper-receiving surface, means for moving said device in said slot, andmeans operable when said elements lie on opposite sides of said piece ofpaper to cause said elements to punch said paper and be retractedtherefrom.

14. In a rotary punching device, the combination of a rotary drum havinga surface to receive a piece of paper to be punched, a punching devicemounted on the surface of the drum and movable in a direction lengthwiseof the latter, said punching device having spaced cooperatingpunching'elements, means for moving said device toward and away from thepaper-receiving-surface to po- V sition said elements on opposite sidesof a piece of paper, the edge of said paper entering the space betweensaid elements, and means for actuating said punching elementsCERTIFICATE OF CORRECTION.

Patent No. 1,910,395. I May 23, 1933.

JOSEPH D. KREIS.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 2,line 25, strike out the syllable and words "ment 36 mounted at the innerend of each cam" and insert instead "thereby is a maledie 32 and in thelower arm"; and that the said Letters Patent should be read with thiscorrection therein that the same may conform to the record of the casein the Patent Office.

Signed and sealed this 27th day of June. A. D. 1933.

M. J, Mooi'e.

(Seal) Acting Commissioner of Patents.

